删除mysql数据库中的重复数据记录
(编辑:jimmy 日期: 2024/12/27 浏览:3 次 )
采用的是下面的方法可删除,假设重复的是test数据库中的title字段
复制代码 代码如下:
create table bak as (select * from test group by title having count(*)=1);
insert into bak (select * from test group by title having count(*)>1);
truncate table test;
insert into test select * from bak;
复制代码 代码如下:
create table bak as (select * from test group by title having count(*)=1);
insert into bak (select * from test group by title having count(*)>1);
truncate table test;
insert into test select * from bak;
下一篇:MYSQL administrator 使用